article: Last Sunday afternoon, I was having dinner in a restaurant when my friend Poor came in. Poor is working in a bank and is quite rich, but he is always borrowing money from his friends and never pays it back. Poor saw me and came to sit at my table. He had never borrowed any money from me. When he was eating, I asked him to lend me two dollars. To my surprise, he gave me the money at once."I have never borrowed any money from you,"Poor said,"So you can pay for my dinner."
  Read the passage and choose the best answers.(,. )
question: Why was Poor glad to lend the writer two dollars?
options: Because they are brothers. Because Poor is rich. Because the writer is rich. Because Poor wanted the writer to pay for the dinner.